Alpinestars SP-X BOA Boot vs KLIM Havoc GTX BOA Snowbike Boots

These are different tools. The Alpinestars SP-X BOA is a CE-certified sport and sport-touring boot for pavement: light, breathable, mid-height, with a TPU toe slider and the TPF sole frame. The KLIM Havoc GTX BOA is a snowbike and snowmobile boot: GORE-TEX waterproofing, 600g Thinsulate insulation, a Michelin sole and a composite toe. Buy the Alpinestars for road riding in mild to warm weather and for walking off the bike. Buy the KLIM for snow, wet cold and backcountry snowbike use. Owners rate the Alpinestars well but note it is not waterproof; the KLIM is built for conditions the Alpinestars cannot handle.

• Choose the Alpinestars SP-X BOA if you ride a sport or sport-touring bike on pavement, want a light CE-approved boot that fits under riding pants and is comfortable to walk in.
• Choose the KLIM Havoc GTX BOA if you ride a snowbike or snowmobile in cold, wet conditions and need a waterproof, insulated boot with a grippy Michelin sole.